package com.cr.api.controller;

/*    */
/*    */

import com.cr.common.constant.Constants;
import com.cr.common.core.controller.BaseController;
import com.cr.common.core.domain.AjaxResult;
import com.cr.common.utils.Base64;
import com.cr.common.utils.CacheUtils;
import com.cr.common.utils.uuid.IdUtils;
import com.google.code.kaptcha.Producer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.concurrent.TimeUnit;

/*    */ @RestController
/*    */ @RequestMapping({"/api/captcha"})
/*    */ public class ApiCodeController extends BaseController {
            @Resource(name = "captchaProducer")
            private Producer captchaProducer;

            @Resource(name = "captchaProducerMath")
            private Producer captchaProducerMath;

            // 验证码类型
            private String captchaType = "char";

            /**
             * 生成验证码
             */
            @GetMapping("/captchaImage")
            public AjaxResult getCode(HttpServletResponse response) throws IOException
            {
                AjaxResult ajax = AjaxResult.success();

                // 保存验证码信息
                String uuid = IdUtils.simpleUUID();
                String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;

                String capStr = null, code = null;
                BufferedImage image = null;

                // 生成验证码
                if ("math".equals(captchaType))
                {
                    String capText = captchaProducerMath.createText();
                    capStr = capText.substring(0, capText.lastIndexOf("@"));
                    code = capText.substring(capText.lastIndexOf("@") + 1);
                    image = captchaProducerMath.createImage(capStr);
                }
                else if ("char".equals(captchaType))
                {
                    capStr = code = captchaProducer.createText();
                    image = captchaProducer.createImage(capStr);
                }

                CacheUtils.put(verifyKey, code);
                // 转换流信息写出
                FastByteArrayOutputStream os = new FastByteArrayOutputStream();
                try
                {
                    ImageIO.write(image, "jpg", os);
                }
                catch (IOException e)
                {
                    return AjaxResult.error(e.getMessage());
                }

                ajax.put("uuid", uuid);
                ajax.put("img", Base64.encode(os.toByteArray()));
                return ajax;
            }
        }

